Ujjdwiurgh Power Board Protection Module 10pcs Type-C 5V Charge Discharge Integrated 3.7V 4.2V 18650 Lithium Battery Charging Boost

1. Small volume. Smaller than similar products. 2. 4.5-5.5V power supply, applicable to a single lithium battery (unlimited in parallel), with a maximum of 1.2A. It can be used to stabilize 1A current as required. 4. With overshoot and over discharge protection, the over discharge protection is 2.9V, and the charging cut-off voltage is 4.2V! 3. Applicable to all types of 3.7V lithium batteries, including 18650 and aggregate batteries. 5. When there is no external input voltage, it automatically switch to the output mode, supporting small current, output 5V, and output about 450mA. If 1a is output, the voltage be about 4.9V-4.5V according to the power situation.